Results 41 to 50 of about 1,159,598 (181)

Consideration of the radiation dose delivered away from the treatment field to patients in radiotherapy

Journal of Medical Physics, 2011
Radiation delivery to cancer patients for radiotherapy is invariably accompanied by unwanted radiation to other parts of the patient′s body. Traditionally, considerable effort has been made to calculate and measure the radiation dose to the target as ...
Michael L Taylor, Tomas Kron
doaj   +1 more source

Assessment of Dose Calculation Accuracy of TiGRT Treatment Planning System for Physical Wedged fields in Radiotherapy [PDF]

Iranian Journal of Medical Physics, 2016
Introduction Wedge modifiers are commonly applied in external beam radiotherapy to change the dose distribution corresponding to the body contour and to obtain a uniform dose distribution within the target volume.
Bagher Farhood, Mohammad Taghi Bahreyni Toossi, Shokouhozaman Soleymanifard   +2 more
doaj   +1 more source

Supplemental computational phantoms to estimate out-of-field absorbed dose in photon radiotherapy [PDF]

Physics in Medicine & Biology, 2018
The purpose of this study was to develop a straightforward method of supplementing patient anatomy and estimating out-of-field absorbed dose for a cohort of pediatric radiotherapy patients with limited recorded anatomy. A cohort of nine children, aged 2-14 years, who received 3D conformal radiotherapy for low-grade localized brain tumors (LBTs), were ...
Kyle J Gallagher, Jaad Tannous, Racile Nabha, Joelle Ann Feghali, Zeina Ayoub, Wassim Jalbout, Bassem Youssef, Phillip J Taddei   +7 more
openaire   +2 more sources

Simulation and experimental verification of ambient neutron doses in a pencil beam scanning proton therapy room as a function of treatment plan parameters

Frontiers in Oncology, 2022
Out-of-field patient doses in proton therapy are dominated by neutrons. Currently, they are not taken into account by treatment planning systems. There is an increasing need to include out-of-field doses in the dose calculation, especially when treating ...
Olivier Van Hoey, Liliana Stolarczyk, Liliana Stolarczyk, Liliana Stolarczyk, Jan Lillhök, Linda Eliasson, Natalia Mojzeszek, Malgorzata Liszka, Malgorzata Liszka, Ali Alkhiat, Ali Alkhiat, Vladimir Mares, François Trompier, Sebastian Trinkl, Sebastian Trinkl, Immaculada Martínez-Rovira, Maite Romero-Expósito, Carles Domingo, Ondrej Ploc, Roger Harrison, Pawel Olko   +20 more
doaj   +1 more source

Experimental verification of acuros XB in the presence of lung-equivalent heterogeneities [PDF]

, 2017
Acuros XB (AXB) is a deterministic algorithm that directly accounts for the effects of heterogeneities and improves the accuracy of photon dose calculations in radiotherapy. Nevertheless, the accuracy of AXB inside lung has not been yet fully examined by
Agramunt Chaler, Sebastià, Bueno Vizcarra, Marta, Duch Guillen, María Amor, Jurado Bruggeman, Diego, Muñoz Montplet, Carles   +4 more
core   +2 more sources

Estimating Radiotherapy-Induced Secondary Cancer Risk Arising from Brain Irradiation at High Energy: A Monte Carlo Study

Frontiers in Biomedical Technologies, 2021
Background: The present study aims to determine the whole-body out-of-field photon dose equivalents of high-energy conventional radiation therapy treatment.
Soheil Elmtalab, Amir Hossein Karimi, Fardin Samadi Khoshe Mehr, Hamed Zamani, Iraj Abedi, Fakhereh Pashaei   +5 more
doaj   +1 more source

Ionization versus displacement damage effects in proton irradiated CMOS sensors manufactured in deep submicron process [PDF]

, 2009
Proton irradiation effects have been studied on CMOS image sensors manufactured in a 0.18 μm technology dedicated to imaging. The ionizing dose and displacement damage effects were discriminated and localized thanks to 60Co irradiations and large ...
Bernard, Frédéric, Goiffon, Vincent, Magnan, Pierre, Rolland, Guy, Saint-Pé, Olivier   +4 more
core   +2 more sources

Measurement of Reference Radiation Spectrum of Isotopic Neutron Source and Analysis of Simulated Neutron Spectrum

Journal of Isotopes, 2023
The neutron reference radiation field of different components is the basic condition for the performance test of neutron shielding materials. In order to obtain an ideal neutron field for neutron protection material testing, a multi sphere energy ...
LI Ziping;TANG Zhihui;LI Da;FENG Mei;JIANG Hong;LI Duohong;ZHOU Zhibo
doaj   +1 more source

Measurement of out of field doses in brain proton therapy with GATE simulations

Cumhuriyet Science Journal, 2021
Proton therapy as one of the radiotherapy applications, aims to treat the tumor by using the accelerated proton particle. High radiation dose distributions delivered to the tumor tissue, is characterized with Bragg curves, while the radiation in the tissues surrounding the tumor is expected to be as low as possible.
Melisa SÖNMEZ, Sinan KUDAY
openaire   +3 more sources

Analysis of total dose-induced dark current in CMOS image sensors from interface state and trapped charge density measurements [PDF]

, 2010
The origin of total ionizing dose induced dark current in CMOS image sensors is investigated by comparing dark current measurements to interface state density and trapped charge density measurements.
Girard, Sylvain, Goiffon, Vincent, Magnan, Pierre, Paillet, Philippe, Virmontois, Cédric   +4 more
core   +4 more sources